5-Hydroxy-3-methyl-2-(trifluoromethoxy)pyridine-4-carbonyl chloride
5-Hydroxy-4-methyl-2-(trifluoromethoxy)pyridine-3-carbonyl chloride
3-Hydroxy-2-methyl-5-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-Hydroxy-6-methyl-4-(trifluoromethoxy)pyridine-3-carbonyl chloride